aoz1050pi Alpha & Omega Semiconductor, aoz1050pi Datasheet
aoz1050pi
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aoz1050pi Summary of contents
Page 1
... General Description The AOZ1050PI is a high efficiency, easy to use synchronous buck regulator. The AOZ1050PI works from 4 input voltage range, and provides continuous output current with an output voltage adjustable down to 0.8 V. The AOZ1050PI comes in an exposed pad SO-8 package and is rated over a -40 ° ...
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... No Connect Pin. Pin 8 is not internally connected. Connect this pin externally to LX and use it for better thermal performance. Switching node the drain of the internal PFET used as the thermal pad of the power stage. www.aosmd.com AOZ1050PI Environmental Green Product Page ...
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... FR-4 board with 2 oz. Copper still air environment with -65 °C to +150 ° °C. The value in any given application depends on the A user’s specific board design. 2 series with 100 pF. www.aosmd.com AOZ1050PI VIN + ISen – Q1 Level Shifter + FET Driver ...
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... VFB = 1 > 1.2 V OUT °C 0.788 A Off Threshold On Threshold Rising J T Falling www.aosmd.com AOZ1050PI Typ. Max. Units V 4.5 18 4.1 V 3.7 1.6 2.5 mA µ 0.8 0.812 V 0 200 nA 0 100 mV µ 400 ...
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... 3.3 V unless otherwise specified. EN OUT Vin 100mV/div Vo 20mV/div IL 1A/div VLX 5V/div 50% to 100% Load Transient Vo 1V/div Vin 5V/div lin 1A/div www.aosmd.com AOZ1050PI Full Load Operation Vin 200mV/div Vo 20mV/div IL 1A/div VLX 5V/div 2µs/div Vo 200mV/div Io 1A/div 200µs/div Page ...
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... FB voltage is ramped to follow the voltage of the soft start pin until it reaches 0.8 V. The voltage of the soft-start pin is charged by an internal 5 µA current. The EN pin of the AOZ1050PI is active high. Connect the EN pin to VIN if the enable function is not used. Pulling EN to ground will disable the AOZ1050PI. Do not leave EN open ...
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... This greatly improves the converter efficiency and reduces power loss in the low-side switch. The AOZ1050PI uses a P-Channel MOSFET as the high-side switch. This saves the bootstrap capacitor normally seen in a circuit using an NMOS switch. It also allows 100 % turn-on of the high-side switch to achieve linear regulation mode of operation ...
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... Figure 1. Component selection is explained below. Input Capacitor The input capacitor must be connected to the V the PGND pin of AOZ1050PI to maintain steady input voltage and filter out the pulsing input current. The voltage rating of input capacitor must be greater than maximum input voltage plus ripple voltage. ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1050PI, FB and COMP are the inverting input and the output of the internal error amplifier. A series R and C compensation network connected to COMP provides one pole and one zero. The pole is: ...
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... A ground plane is strongly recommended to connect the input capacitor, the output capacitor, and the PGND pin of the AOZ1050PI. In the AOZ1050PI buck regulator circuit, the major power is to set the cross dissipating components are the AOZ1050PI and the output inductor. The total power dissipation of converter ...
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... Layout Considerations The AOZ1050PI is an exposed pad SO-8 package. Several layout tips are listed for the best electric and thermal performance. 1. The exposed pad (LX) is connected to the internal PFET and NFET drains. Connected a large copper plane to the LX pin to help thermal dissipation not use a thermal relief connection to the VIN pin or the PGND pin ...
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... D0 3.20 3.40 D1 3.10 3.30 5.74 E 5.80 6.00 e — 1.27 E1 3.80 3.90 E2 2.21 2.41 E3 0.40 REF L 0.40 0.95 y — — θ 0 ° 3 ° | L1–L1' | — 0.04 L1 1.04 REF www.aosmd.com AOZ1050PI L1' θ Dimensions in inches Symbols Min. Nom. Max. 1.70 A 0.055 0.061 0.067 0.10 A1 0.000 0.002 0.004 1.60 A2 0.055 0.059 0.063 0.51 B 0.012 0.016 0.020 0.25 C 0.007 — 0.010 5.00 D 0.189 ...
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... ø97.00 13.00 17.40 ø13.00 ±0.10 ±0.30 ±1.00 +0.50/-0.20 Components Tape Orientation in Pocket www.aosmd.com AOZ1050PI Feeding Direction 8.00 4.00 2.00 0.25 ±0.10 ±0.10 ±0.10 ±0. 10.60 2.00 — — — ±0.50 Leader Tape 500mm min ...
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... WLT Assembly Lot Code Year & Week Code 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. www.aosmd.com AOZ1050PI Page ...